house
Singular: guardPlural: guards
The plural form for the noun guard is guards.
The plural of guard is guards. As in "the dog closely guards the cookie she just stole".
Guard-houses.
Guards
rear guards
The word crises is a plural word; it is the plural form of the word crisis.
Oh, dude, the plural of color guard is technically "color guards." It's like adding an "s" to make it plural, you know? So, if you see multiple color guard teams, you'd be like, "Look at all those color guards over there."
There is no plural word for if.
The plural form for the demonstrative pronoun this is these.
A non-plural word, a word (noun or pronoun) that is not plural is singular, a word for just one.
The plural word of delay is delays.